Page 1. Tetrahedron Letters. Vol. 33, No. 16, pp. 21452148. 1992 oo40-4039,92 $5.00 + .OO Printed in Great Britain Pergamon Press Ltd Enantioselective Preparation of 2-Alkyl-3-Aryloxypropionic Acids and Esters and 3-Alkyl-4Xhromanones Bernard Loubinoux*, Christine Viriot-Chauveau, JL Sinnes Laboratoire. de Chimie Organique 4, Universiti de Nancy I, Faculd des Sciences. BP 239,54506 Vandoeuvre-k-Nancy (France) ...